Finding the Fourth Proportional to 1,061.18, 1,464.09 and 612.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.18 : 1,464.09 = 612.99 : x
2. Step 2: Convert to fraction form
   1,061.18/1,464.09 = 612.99/x
3. Step 3: Cross multiply
   1,061.18x = 1,464.09 × 612.99
4. Step 4: Simplify right side
   1,061.18x = 897,472.53
5. Step 5: Solve for x
   x = 897,472.53/1,061.18
6. Step 6: Final answer
   x = 845.73